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Full-Text Articles in Psychology
Functionally Distinct Pools Of Calcineurin Contribute To Depotentiation-Like Synaptic Changes In The Lateral Amygdala During Auditory Fear Extinction, Elena Kay Rotondo
Functionally Distinct Pools Of Calcineurin Contribute To Depotentiation-Like Synaptic Changes In The Lateral Amygdala During Auditory Fear Extinction, Elena Kay Rotondo
Theses and Dissertations
Until recently, auditory fear extinction was not thought to modify substrates involved in the storage of the original auditory fear memory. Evidence now suggests that extinction results in the reversal of the fear conditioning-induced potentiation of thalamic inputs to the lateral amygdala. However, little is known about the molecular mechanisms that support this depotentiation of synaptic strength. Here we present behavioral and molecular evidence in support of the contribution of two distinct pools of the protein phosphatase calcineurin to depotentiation-like changes in lateral amygdala AMPA receptor trafficking during auditory fear extinction. Calcineurin protein that exists prior to the onset of …
Effects Of Reinforcement Duration And Duration-Correlated Stimuli On Preference In Pigeons, Michael James Harman
Effects Of Reinforcement Duration And Duration-Correlated Stimuli On Preference In Pigeons, Michael James Harman
Theses and Dissertations
Pigeons were trained in a two-key, concurrent chains choice procedure with equal initial and terminal links. Across conditions, the durations of reinforcement in the terminal links were either equal (3-s vs 3-s) or unequal (3-s vs 6-s), and these durations were either uncued by hopper lights (both white) or cued (3-s: white; 6-s: colored). The pigeons’ choice responding leading to the longer duration of reinforcement was generally in the range of indifference with nondifferential hopper lights, but favored the longer duration with differential hopper lights. Taken together, the data suggest that differential hopper lights facilitated the discrimination of the longer …
Using Video Modeling To Teach Parents To Use The Natural Language Paradigm, Brittany Ann Leblanc
Using Video Modeling To Teach Parents To Use The Natural Language Paradigm, Brittany Ann Leblanc
Theses and Dissertations
There is paucity of research examining the use of video modeling to train parents to implement formats of early intervention such as Naturalistic Environmental Training (NET). The purpose of the current study was to evaluate the efficacy of video modeling to train parents to implement the Naturalistic Language Paradigm (NLP), a specific format of NET, with their children diagnosed with or suspected of having autism spectrum disorder. All three parents demonstrated accurate performance of the components of NLP with an adult confederate and met the mastery criterion in two or three video modeling sessions. We measured the parent’s accurate implementation …
Comparing Fixed-Amount And Progressive-Amount Schedules Of Reinforcement For Tic Suppression, Matthew Richard Capriotti
Comparing Fixed-Amount And Progressive-Amount Schedules Of Reinforcement For Tic Suppression, Matthew Richard Capriotti
Theses and Dissertations
Chronic tic disorders (CTDs) involve motor and/or vocal tics that cause substantial distress and impairment. Existing behavioral interventions for CTDs have comparable efficacy to pharmacological treatments but still leave many individuals with significant tic symptoms and impairment. One approach to improving existing treatments involves conducting pre-clinical laboratory research to evaluate procedures that may be attractive candidates for applied treatment research. Reinforcing tic suppression via differential reinforcement of other behavior (DRO) procedures produces decreases in tic frequency of ~80% in youth with CTDs; however, a more robust reduction may be needed to affect durable clinical change. The present study compared the …